Machine Learning
Frank Qiu
Haider Shah
Stephanie Zhang
Chris Pang
Machine Learning
Frank Qiu
Chris Pang
Haider Shah
Stephanie Zhang
Intro
Algorithms
Business Value
Best Practices
The science of getting computers to act without being explicitly programmed.
-Stanford University CS 229 (Machine Learning)
What is Machine Learning?
Inference and learning with massive datasets using intelligent machines.
-UBC CSPC340 (Machine Learning & Data Mining)
A branch of artificial intelligence that relies heavily on probability statistics uses data to make predictions and learn.
- The Economist
Get some insights from a process by which computer scientists direct a program to pore through a huge database.
- Harvard Business Review
The Restaurant Case
John
Jack used to come a lot, why he hasn't showed up for a while?
Why Bill's bar is more popular?
Is Roy a slow server?
Vancouver's best selling beer
Average cost to run a restaurant
Transaction records related to Jack
......
Popular sauces
Popular restaurants
Query From Computer
Busiest hour of the week
Data Driven Decision
John
People like the happy hour in Bill's Bar so much that the keep going there even when it's not happy hour.
Roy is a great server, he sells more food, and that's why it seems like he is slow.
The Honey BBQ Rib is the best seller, and it has 10% chance of sold out during weekend. So get enough stock before weekend.
But,is that good enough?
But, Is that Good Enough?
MachineLearning.py
import os
import scipy as sp
import matplotlib.pyplot as plt
print("I'm MachineLearning") def ML(models, x, y):
if models:
if mx is None and x = 0
for x, y in zip(models):
# print "Model:",model
# print "Coeffs:",model.coeffs
plt.plot(model(x), c=color)
plt.legend(["d=%i" % m.order for m in models], loc="upper left") Python Hi, Python.
Meh~
Look!
Machine Can do it Again and Again.
MachineLearning.py
import os
import scipy as sp
import matplotlib.pyplot as plt
print("I'm MachineLearning") def ML(models, x, y):
if models:
if mx is None and x = 0
for x, y in zip(models):
# print "Model:",model
# print "Coeffs:",model.coeffs
plt.plot(model(x), c=color)
plt.legend(["d=%i" % m.order for m in models], loc="upper left") Python Hi, Python.
Top Restaurants
Other Restaurants
Factor 2
Factor 1
Machine Can do it Again and Again.
MachineLearning.py
import os
import scipy as sp
import matplotlib.pyplot as plt
print("I'm MachineLearning") def ML(models, x, y):
if models:
if mx is None and x = 0
for x, y in zip(models):
# print "Model:",model
# print "Coeffs:",model.coeffs
plt.plot(model(x), c=color)
plt.legend(["d=%i" % m.order for m in models], loc="upper left") Python Hi, Python.
Top Restaurants
Other Restaurants
Factor 4
Factor 3
Let the Machine Decide
MachineLearning.py
import os
import scipy as sp
import matplotlib.pyplot as plt
print("I'm MachineLearning") def ML(models, x, y):
if models:
if mx is None and x = 0
for x, y in zip(models):
# print "Model:",model
# print "Coeffs:",model.coeffs
plt.plot(model(x), c=color)
plt.legend(["d=%i" % m.order for m in models], loc="upper left") Python Hi, Python.
Hey John, let's talk.
Factor 1, 34, 42443, 254432 & 4342343214 are the most significant factors. Align your strategies in those factors with the best restaurants. You can beat Bill's Bar in a week.
Machine Is Better
KPI
View Span
John's View
Bill's View
Machine's View
Artificial Intelligence
Machine Learning
Data Mining
Machine Learning VS Data Mining
Data Mining discovers previously unknown patterns and knowledge
Machine Learning is used to reproduce known
patterns and knowledge, automatically apply that to other data, and then automatically those results to decision making and actions
Machine Learning Algorithms
Supervised Learning
Unsupervised Learning
Reinforced Learning
Supervised Learning
Algorithms are trained using labelled examples
Historical data predicts likely future events
Example : Credit Card Transactions
Unsupervised Learning
No Historical Labels
Goal is to explore data and find some structure within
Example : Customer Segmentation
Reinforced Learning
Learn by trial and error
Agent, Environment, Action
Example: Robotics, Gaming, Navigation
Machine Learning
is
everywhere
Machine Learning
is
Everywhere
Customized
Recommendation
Face
Recognition
Handwriting
Recognition
Ranking
webpages
Applications
Big Data
can't program
by hand
Beyond
human
capability
$48
billion
/year
Online Advertising
$11.5
/year
billion
Fraud detection systems
Gene prediction for cancer
nature disaster prediction
self-driving cars
...
ML Workflow: Data to Deployment
Historical Data
Model Building
Model Optimization
Model Evaluation
Answers
New Data
http://www.manning.com/brink/RWML_MEAP_CH01.pdf
- Clearly understand the business problem
- Pair the best algorithm for the problem type
- Employ data discipline
- Consider scalability in production early
- Actively monitor performance metrics for model
Best Practices
http://www.forbes.com/sites/danwoods/2013/02/13/recomminds-advice-for-making-machine-learning-work-for-business/
http://machinelearningmastery.com/how-to-implement-a-machine-learning-algorithm/
http://jvns.ca/blog/2014/06/19/machine-learning-isnt-kaggle-competitions/
- Intuitive GUIs for building models and interactive data exploration and visualization
- Automated model evaluation to identify the best performers
- Easier model deployment so you can get repeatable, reliable results more quickly
Recent Process Improvements
Available Software
Kaggle Competitions
http://www.research.ibm.com/foiling-financial-fraud.shtml
http://www.eecs.tufts.edu/~dsculley/papers/ad-click-prediction.pdf
http://www.nytimes.com/2015/02/12/technology/personaltech/googles-time-at-the-top-may-be-nearing-its-end.html
http://www.quora.com/What-are-some-interesting-possible-applications-of-machine-learning
http://www.forbes.com/sites/85broads/2014/01/06/six-novel-machine-learning-applications/
http://www.wsj.com/articles/SB10001424052748703834604575365310813948080
Machine Learning - Mar 28 (Ver3)
By Christopher Pang
Machine Learning - Mar 28 (Ver3)
Machine Learning Presentation
